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O Type Observation Autogyro Kai 2

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No.325 オ号観測機改二
Heli.png Rotorcraft
Effects: Firepower+1 ASW+11 Accuracy+1 LoS+1
Combat Radius: 1 (Deployment Cost: Bauxite 4)
Scrap value: Fuel 1 Ammo 3 Bauxite 4 (Unbuildable)

Equipment Card O Type Observation Autogyro Kai 2.png

Equipment Character O Type Observation Autogyro Kai 2.png

Equipment Item O Type Observation Autogyro Kai 2.png

Equipment Full O Type Observation Autogyro Kai 2.png

Refittable Class
Coastal Defense Ship Destroyer
Light Cruiser Torpedo Cruiser
Heavy Cruiser Training Cruiser
Aviation Cruiser Fast Battleship
Battleship Aviation Battleship
Light Carrier Standard Aircraft Carrier
Armored Carrier Seaplane Tender
Submarine Aircraft Carrying Submarine
Submarine Tender Fleet Oiler
Repair Ship Amphibious Assault Ship



This is an autogyro developed and operated by the Army. This is the final what-if version with its engine and anti-submarine capabilities further enhanced.
An ancestor of the modern patrol helicopter, it can provide powerful ASW capabilities when deployed on the refitted aviation battleships with through flight decks.


Rotorcraft are ASW Aircraft, being used to trigger some OASW and Land-based ASW attacks.

As they do not have any Dive Bombing Dive Bomber Attack stat, they do not participate to Phases 2 & 3 of Aerial Combat and are immune to shootdown. They:

  • Will launch during aerial battle if other planes are launched, but cannot start an aerial battle on their own.
  • CV/B/L equipped with them will still require a Dive Bomber Dive Bomber or a Torpedo Bomber Torpedo Bomber to attack submarines, as they are unable to attack anything without a bomber.
  • AS and AR can equip them, but the former cannot attack SS, and the latter has a carrying capacity of 0 so they do not function.
  • AO can equip them, but their attack animation will still be a depth charge animation.

Their LBAS Combat Radius cannot be extended.


How To Obtain

Upgradeable from: O Type Observation Autogyro KaiO Type Observation Autogyro Kai

Ranking reward for:

  • May 2019: 1-5 (★+3), 6-20 (★+3)


Used to improve: O Type Observation Autogyro Kai NiO Type Observation Autogyro Kai Ni

Updates History

  • 2019-03-27: Implemented
  • 2020-08-27: Visible bonuses increased

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
Ise Kai NiIse Kai Ni +1 +2 +1 [1]
Hyuuga Kai NiHyuuga Kai Ni
Kaga Kai Ni GoKaga Kai Ni Go
+2 +3 +1 [2]
Noshiro Kai NiNoshiro Kai Ni +4 +1 Non-stackable between any Rotorcraft
Yahagi Kai Ni (B)Yahagi Kai Ni
Yahagi Kai Ni B
+3 +1 Non-stackable between any Rotorcraft
  1. Firepower+0 Anti-Submarine Warfare+1 prior to 2020-08-27
  2. Firepower+0 Anti-Submarine Warfare+2 prior to 2020-08-27


Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Rotorcraft O Type Observation Autogyro Kai 2 0 80 70 60 190 7/8 4/5 1xSeaplane.png X X X H H H X Hyuuga Kai Ni Upgrades to S-51J
6 8/9 5/6 2xRedPlane.png
10 50/80 10/20 1xHeli.png
3xNew Model Aerial Armament Material
Improvement Improved effects
Rotorcraft 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★
Anti-Submarine Warfare 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Accuracy Day? 1.00 1.41 1.73 2.00 2.23 2.44 2.64 2.82 3.00 3.16
Accuracy Night? 1.30 1.84 2.25 2.60 2.91 3.18 3.44 3.68 3.90 4.11

See Also